偶合器
B. Connect the drainage accessory with the coupler. 將排水配件和連結器連接起來。
Kits include: Cover, Grooved Coupler &Gasket. 组件包括：阀盖，沟槽联结器和垫圈。
Lange was used for quadrature coupler. 正交耦合电桥采用兰格电桥。
Connect the drainage accessory with the coupler. 将排水配件和连结器连接起来。
A coupler is attached to the color drum. 一耦合器固定在该彩色圆筒上。
Controllable coupler control by U2. 可控耦合器被U2控制。
